The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 21, 1995
Filed:
Aug. 10, 1993
Applicant:
Inventor:
Carl G Hayssen, Andover, MA (US);
Assignee:
Ungermann-Bass, Inc., Santa Clara, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
370 854 ; 370 855 ; 370 941 ; 380-9 ; 380 23 ;
Abstract
Two message security methods and apparatus for the same for token ring local area networks. According to a first method, a port in a ring central controller examines the source and destination addresses of a received data packet and stores a received data packet and replaces the data portion with unrelated data bits only if the address does not match that of the attached user station. In another embodiment, the port scrambles the data portion of the received data packet if the addresses do not match.
Hayssen, Carl. (1995). Message security on token ring networks (U.S. Patent No. 5400334). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5400334
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile